First page
Back
Continue
Last page
Graphics
Alternate Form
Alternate form:
Needs fewer temporary values
y[n]
Current output
x[n]
Current input
z[n]
Current intermediate
z[n-1]
Previous intermediate
z[n-2]
2nd Previous intermediate
***
one less temp value
What the terms mean:
y[n] = ( -1 * z[n- 2])
+ ( 0 * z[n- 1])
+ ( 1 * z[n])
z[n] = ( 1 * x[n])
+ ( b * z[n- 2])
+ ( a * z[n- 1])
x[n]
y[n]
+
z[n-1]
z[n-2]
z[n]
+
*a
*b
*1
*-1
*0
*1
*-1
*0
output side summation is simplified to z[n] – z[n-2]